jsp文件下载

    技术2022-05-12  1

    在用JSP下载某些文件时,可能会碰到文件直接用IE打开了的情况。下面的方法可以解决这问题: downloadTest.jsp: <%@page contentType="text/html; charset=EUC-JP" language="java" %> <%@page import="java.util.*"%> <%@page import="java.io.*"%> <%@page import="java.net.*"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" " http://www.w3.org/TR/html4/strict.dtd";> <% String fileName=""; if (request.getParameter("file") != null) { fileName = request.getParameter("file"); } if("1".equals(request.getParameter("downloadFlag"))){//downloadFlag为1时为下载文件 response.setHeader("Content-disposition","attachment; filename="+fileName); }else if("0".equals(request.getParameter("downloadFlag"))){//downloadFlag为0时为用指定的程序打开文件 response.setContentType("application/ms-word"); }//downloadFlag为其他值时用IE默认的方式打开文件 BufferedInputStream bis = null; BufferedOutputStream bos = null; try { bis = new BufferedInputStream(new FileInputStream(getServletContext().getRealPath("" + fileName))); bos = new BufferedOutputStream(response.getOutputStream()); byte[] buff = new byte[2048]; int bytesRead; while(-1 != (bytesRead = bis.read(buff, 0, buff.length))) { bos.write(buff,0,bytesRead); } } catch(final IOException e) { System.out.println ( "IOException." + e ); } finally { if (bis != null) bis.close(); if (bos != null) bos.close(); } %> 这里,我是用test.doc(与downloadTest.jsp处于同一目录)来做下载文件的,请求时的url为: http://127.0.0.1:8080/downloadTest.jsp?file=test.doc&downloadFlag=x x=0时代表你用指定的程序打开文件 x=1时代表你要下载文件 x=其他值时代表你按IE的默认方式处理

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